Perhaps on of the most ingrained and contentious habits of bookbinders and conservators is if the leave the blade of the board shear up or down. Once you are in the habit of leaving it one way of the other, it is virtually impossible to change. So if you use a board shear please take a second to fill out the poll below and the results will be immediately calculated. I realize this is perhaps not the most important topic I could be thinking about, but the new poll option was introduced this week on wordpress, so I guess this is a good example of how technology drives and influences content.
THE ARGUMENT FOR LEAVING THE BLADE UP
I confess I fall into this camp. I find it much faster, when approaching the board shear to be able to immediately able place the material to be cut under the fence, and slide it into place without having to lift the blade first. Also, when the blade is up, it sticks out less, so there is less of a chance of running into the handle or counterweight, which is a more common injury than cutting yourself on the blade.
THE ARGUMENT FOR LEAVING THE BLADE DOWN
It is dangerous to leave the blade up for two reasons. First, although the blade has a fairly obtuse angle, it is still possible to cut yourself on it, and it just looks dangerous, this long blade sticking up in the air. Second it is more likely that the counterweight could slide off the end (especially if you haven’t drilled through the bar and inserted a bolt) and the weight of the blade would come crashing down on whatever happens to be under it.